Mersen 44020200 K2-2PG275 Type 2 surge protection device with combined L-N and N-PE protection, 275 V AC operating voltage, 20 kA nominal discharge current and 50 kA maximum discharge current.
£78.86
The Mersen 44020200, also identified as the K2-2PG275, is a compact and reliable Type 2 surge protection device (SPD) designed to protect single-phase low-voltage electrical installations against transient overvoltages. As part of the proven Mersen Surge-Trap K2 series, it combines line-to-neutral (L-N) and neutral-to-earth (N-PE) protection within a single pluggable unit, making it ideal for TT and TN-S electrical systems.
The K2-2PG275 features a pluggable cartridge design that simplifies maintenance and replacement without removing the complete base from the DIN rail. Its integrated visual status indicator enables quick inspection of the protection module, helping maintenance personnel minimise downtime and maintain continuous surge protection.
With a 275 V AC maximum continuous operating voltage (L-N), 255 V AC maximum continuous operating voltage (N-PE), a 20 kA nominal discharge current and a 50 kA maximum discharge current, the Mersen 44020200 provides dependable protection against switching transients and lightning-induced surges. Its compact two-module DIN-rail format makes it suitable for distribution boards, switchgear and industrial control panels.
Transient overvoltages caused by lightning activity and electrical switching operations can damage sensitive equipment including PLCs, power supplies, communication devices and control electronics. Effective surge protection helps minimise equipment failure and costly downtime.
The Mersen Surge-Trap K2 series provides high-performance protection using advanced thermal disconnection technology and replaceable cartridges, making routine maintenance simple while ensuring reliable long-term protection of valuable electrical installations.
| Voltage | 230 V |
|---|---|
| Manufacturer | Mersen |
| Series | Surge-Trap K2 |
| Model | K2-2PG275 |
| SKU / Part number | 44020200 |
| Product type | Surge protection device |
| SPD classification | Type 2 / Class II |
| Internal configuration | 1+1 |
| Number of poles | 2 |
| Network compatibility | TT and TN-S |
| Protection modes | L-N / N-PE |
| Nominal voltage | 230 V AC |
| Maximum continuous operating voltage (L-N) | 275 V AC |
| Maximum continuous operating voltage (N-PE) | 255 V AC |
| Nominal discharge current | 20 kA |
| Maximum discharge current | 50 kA |
| Voltage protection level | ≤1.5 kV |
| Maximum back-up fuse | 315 A gG |
| Short-circuit withstand | 25 kA |
| Protection rating | IP20 |
| Mounting type | DIN rail |
| DIN modules | 2 |
| Weight | approx. 0.242 kg |
| EAN | 8435297889762 |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
The Mersen 44020200 protects single-phase low-voltage electrical installations from transient overvoltages caused by lightning and switching events.
It is a Type 2 / Class II surge protection device designed for TT and TN-S electrical systems.
The device provides combined line-to-neutral (L-N) and neutral-to-earth (N-PE) surge protection within a single unit.
The K2-2PG275 is rated for a 20 kA nominal discharge current and a 50 kA maximum discharge current.
Yes. The pluggable design allows the surge protection cartridges to be replaced quickly without removing the complete DIN-rail base.
Mersen Surge-Trap K2 surge protection devices are trusted by electrical engineers and panel builders worldwide to protect critical electrical systems from damaging transient overvoltages.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...